Gurgling after colonoscopy is a normal phenomenon, in the process of colonoscopy in order to see the intestinal lumen needs to inflate the intestinal lumen, after the end of the colonoscopy, in the process of retreating from the mirror will be the excess gas pumped out, but there will still be a small portion of the gas remains in the intestinal lumen, through the form of exhaust to discharge these gases, the process of discharging these gases will be gurgling in the stomach. In addition, due to the curvature of the intestinal tract, the rectal tract will be taken by hook and pull method during the examination, which changes the original position of the intestinal tract, and the intestines reach the original position through frequent peristalsis at the end of the examination, at this time, the intestinal sound is hyperactive, there is much exhaust, and the stomach will grumble, and it will return to normal in 1-2 days in general.